User talk:2601:192:4D00:43C0:5552:1430:E5C3:9D44

December 2021
Hello, I'm ComplexRational. I wanted to let you know that one or more of your recent contributions&#32;to Extended periodic table have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Teahouse. There's an important reason the comment mentions E121, whereas E199 is irrelevant here. ComplexRational (talk) 23:16, 10 December 2021 (UTC)